/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package servlets;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import model.DataLocator;
import model.PriceScraper;
import model.ResourceConfiguration;
import model.WebResource;

/**
 *
 * @author thedaego
 */
public class MainServlet extends HttpServlet {
   
    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException  {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        
        try {
            
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet MainServlet</title>");
            out.println("</head>");
            out.println("<body>");
            out.println();
            out.println("</br>");
            //FileInputStream fis = (FileInputStream) this.getServletContext().getResourceAsStream("/WEB-INF/webresrouces.xml");
            File file = new File(this.getServletContext().getRealPath("/WEB-INF/webresources.xml"));
            ResourceConfiguration rc = new ResourceConfiguration(file);
            List<WebResource> webResources = rc.getAllWebResources();
            for (WebResource webResource : webResources){
                for (DataLocator locator : webResource.getDataLocators()){
                    PriceScraper scraper = new PriceScraper(locator);
                    String price = scraper.getPrice();
                    out.println("<h1>Resource: "+webResource.getName()+"</h1>");
                    out.println("<h2>"+locator.getLocatorName()+": "+price+"</h2>");
                }
            }

            out.println("</body>");
            out.println("</html>");
        }catch (Exception e ){
            out.println(e.getMessage());
        } finally {
            out.close();
        }

        
    } 

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    } 

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
